Photo: Wikimedia Commons

Chuck Berry, rock 'n' roll's founding guitar hero and storyteller who defined the music's joy and rebellion in such classics as "Johnny B. Goode," ''Sweet Little Sixteen" and "Roll Over Beethoven," died Saturday at his home in an unincorporated area west of St. Louis. He was 90.

Emergency responders summoned to Berry's residence by his caretaker about 12:40 p.m. found him unresponsive, police in Missouri's St. Charles County said in a statement. Attempts to revive Berry failed, and he was pronounced shortly before 1:30 p.m., police said.

A police spokeswoman, Val Joyner, told The Associated Press she had no additional details about the death of Berry, calling him "really a legend."

Berry's core repertoire was some three dozen songs, his influence incalculable, from the Beatles and the Rolling Stones to virtually any group from garage band to arena act that called itself rock 'n roll. While Elvis Presley gave rock its libidinous, hip-shaking image, Berry was the auteur, setting the template for a new sound and way of life. Well before the rise of Bob Dylan, Berry wedded social commentary to the beat and rush of popular music.

"He was singing good lyrics, and intelligent lyrics, in the '50s when people were singing, "Oh, baby, I love you so,'" John Lennon once observed.

Berry, in his late 20s before his first major hit, crafted lyrics that spoke to the teenagers of the day and remained fresh decades later. "Sweet Little Sixteen" captured rock 'n' roll fandom, an early and innocent ode to the young girls later known as "groupies." ''School Day" told of the sing-song trials of the classroom ("American history and practical math; you're studying hard, hoping to pass...") and the liberation of rock 'n' roll once the day's final bell rang.

"Roll Over Beethoven" was an anthem to rock's history-making power, while "Rock and Roll Music" was a guidebook for all bands that followed ("It's got a back beat, you can't lose it"). "Back in the U.S.A." was a black man's straight-faced tribute to his country at a time there was no guarantee Berry would be served at the drive-ins and corner cafes he was celebrating.

Charles Edward Anderson Berry was born in St. Louis on Oct. 18, 1926. As a child he practiced a bent-leg stride that enabled him to slip under tables, a prelude to the duck walk of his adult years. His mother, like Johnny B. Goode's, told him he would make it, and make it big.

A fan of blues, swing and boogie woogie, Berry studied the very mechanics of music and how it was transmitted. As a teenager, he loved to take radios apart and put them back together. Using a Nick Manoloff guitar chord book, he learned how to play the hits of the time. He was fascinated by chord progressions and rhythms, discovering that many songs borrowed heavily from the Gershwins' "I Got Rhythm."

He began his musical career at age 15 when he went on stage at a high school review to do his own version of Jay McShann's "Confessin' the Blues." Berry would never forget the ovation he received.